(19)

(11)

EP 0 822 877 A1

(12)

(43) Date of publication: 11.02.1998 Bulletin 1998/07 (21) Application number: 96910857.0 (22) Date of filing: 23.04.1996

(51) International Patent Classification (IPC):  B23B 29/ 00( . ) B23B 29/ 04( . ) B23B 29/ 034( . ) B23B 31/ 11( . ) (86) International application number: PCT/AU1996/000234 (87) International publication number: WO 1996/033833 (31.10.1996 Gazette 1996/48)

(84) Designated Contracting States: AT CH DE ES FR GB IE IT LI SE (30) Priority: 27.04.1995 AU 1995PN02683 (71) Applicant: Ziegler, Karl Kew, VIC 3101 (AU)	(72) Inventor: Ziegler, Karl Kew, VIC 3101 (AU) (74) Representative: Higgins, Michael Roger, et al  A.R. Davies & Co. 27, Imperial Square Cheltenham Glos. GL50 1RQ Cheltenham Glos. GL50 1RQ (GB)